How to break in new motor

[Wayne64SS]

@Boxersix

There’s as much speculative information here as in most brake related posts on this forum…

Break in procedures are directly related to the ring composition and cylinder setup and as such you should follow the ring(and/or piston) manufactures specs for break in. They have spent the money doing the research in this area and as such know what is best for your application. Different types of rings and cylinder platings require different types of break in steps. Gas ported pistons vs non ported, low tension rings, surface plating, etc, etc all have an impact as to how rings will seat and all require different procedures to get the best possible seat.

If you’re using a setup outside any pre-determined realm of the manufacture, then it’s up to you to do the work necessary to determine the best possible break in procedure. Otherwise just stick to what is suggested by the ring/piston manufacture.

1320-20V correct on all accounts. I talk “Ra” as it’s typically used in the automotive/engine field where you are calculating/determining the average roughness across a given length of surface whether it be a bearing surface, block deck, or head sealing surface. I have a second hand SRG4K which even it tends to be way more than what I need here but get’s the job done nicely. Tests other things like rq and rz that I haven’t bothered to get into(you would probably know). I hardly ever use the damn thing though, mostly when setting up and testing the cut of new tooling or infrequent material( beryllium copper valve seats for example)

100% but from the other posts here it doesn’t appear anyone is listening. :Idiots